{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xa5913600dc60b732c7d643b5e1e0e87e4c1715503d0206598208ac6e72ca20a6",
    "signature": "0x1cc7eb698f22550c3d5ebaec007717a5e1da0a0957e10a7eb7e26bfcc74571762865e0d0e1bdfe168d5cc33b294a0906d5a80def53a86596ba63d7e806d8cc451b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}