{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964966160",
    "entityType": "User",
    "nonce": "0x909e7d9d7afa2692b2bf47040b9a53fd35d2de4d54e4f100e473c967e8cb0921",
    "signature": "0x58f75dae3c4c8d4f1887bd1d48bb739c67a7f5a96d0d60838c6ec2e36beda2e65760329a6dd9e70a0801eedae9b5ddc708169519cb73edbe33190f85783aae051b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}