{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "288873",
    "entityType": "User",
    "nonce": "0x669c39423f7e6f63741f3b4c123fb5fdeb3122bb7f27598ec1e85d9448d79b83",
    "signature": "0xcfddc2aa5def09b3f9e11e1f62bb26325ff77ac3f2ccbddf1d0a48a5d4f2105e4e294cad9a9865b9facb59102407508171669be15832cb2624b2e01021217f671c",
    "signer": "0x3e16afFf69eC32202c1B755Ad919C7aA325B7aBE",
    "userId": "902811065"
  }
}