{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "984045925",
    "entityType": "User",
    "nonce": "0x3980dce43ed162fc72832c6dbcb65fbd5a71c3d5b5c2f01b7893ca4d0fc07308",
    "signature": "0x50cf71bf526d664569b9b927bea7c4a59fe91e70611d72bcad289ea656e9d1d66c28c83e6a4875711d308cdf2b48a44596d87007295aa67923fa5c4c1ce19d081b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}