{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420563019",
    "entityType": "User",
    "nonce": "0x7db4e3bf97a468b928aef3cdb9826ae3938df2b222f0bcff84f4b443c05f58e0",
    "signature": "0xd9ea443e379c618daab4b86e926fefdd67243c13ae339e813ed22498de027b907d7b37e828b66d30fa8523d1cbb98596792d01923ecbc6e67699f98053fa75161b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}