{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755263",
    "entityType": "User",
    "nonce": "0x8f9faae1f75440b4a0070f7e9179caefd472a1116266c0db583e75d99b9d60e9",
    "signature": "0x0662533eb056205f8e9c198025e2c700b41c29f9c3ba1d7850db9505d9301b590c72586b8be4ea2b033ad8fac5b6ecdd2346b7da637181eb1d00cfecced81ec21c",
    "signer": "0xb90dea25446900B58b936FB95262D7557e6115B7",
    "userId": "559908939"
  }
}