{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9a124c7f4b067107da17a8314062a99905e3c8f2c42a84c574d068e4afd24910",
    "signature": "0x803629619891d081f3c7d9e7768f968291efed5af82d808808b6245542008d1c3ec0eee0304be1a63e9bd92d6ee42da6a4bffa234c630929d8e90cd20a348d831c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}