{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "804508659",
    "entityType": "User",
    "nonce": "0xf3358d261cb29e88601234acd2975a99d9bb13b65f07f2f740b583c43e32f3a9",
    "signature": "0x8980301a6bd60cb3a3e2290d928e552dd8ecf53493bdc6dc3afcdab5555bb40623562ae33ae6d3fbe942db2839bffd0d788fae579027b86d22bd6ad1883219151b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}