{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0xe845bb03779936a349375633c3ef0df49b102ca7fdb15ee7ea0791505ff1e649",
    "signature": "0x9c2a07555c37926af4e654ddb3d5431bea92243b982d2256c5869e5a33161a0e3eef8943076e368ef146af05e3fb86826ec46ea794f03a0ffba885162fa0d2111c",
    "signer": "0x4Eb7b4d3E5A99eeD9Fd090eb5C8692d905b61EF3",
    "userId": "94041"
  }
}