{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2c04288e42bebfab1a63f279a298156dd245c312e924f3a1221dc5f2204d517d",
    "signature": "0xe4340bc6e4f7dd30fef77f011e4d72ddd0d0f388f8f65cad1fdd913e730d6734701c5591e107c467cdde9b448b8f1a533b48313ef5b35c3be0fa73655cc5db3d1b",
    "signer": "0xa85dce385eaA369F6073e0b6e242561d0870425C",
    "userId": "308558165"
  }
}