{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e65332a789b9830fa3dd22da5ea4aab537730a5aae6528d7b89b999fbcf882d",
    "signature": "0xcdba593857e5a31c20bda317634ce7b9ce4ed396b5deaaa0d2ac2a9c3a1a84146ef5e2cfbc318e9efc231e53141ce604605275a098aad5c57eb615c5a1a0ef611c",
    "signer": "0xC3A754c1c5591B5bda6c73d83D539c41997E1180",
    "userId": "549889067"
  }
}