{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3987",
    "entityType": "User",
    "nonce": "0x07dda058ddd2f5471b112b23f8be3c8ac937226144fe569a67e2c294ab094d50",
    "signature": "0x19fa55db2be72383b68f6d33fabf9eb618cfdd009354562cc63c840f9a3bd8cc73e4624ba21315d01b4773f5d27968be5bf115c40d46d7f8ef3e5c7a3de3eeae1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}