{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x20f86a0689ea474a57e7c55f3737e2c9d0555632a0bb4b93344bf260c7bc6e63",
    "signature": "0xec76b572467f9c0610e370a210407c9ae4e4fe2ddb31bd326527fb0913604e465154694b2ca2416d73be258937772535833385db25fe31bf7d9662a4b234471f1c",
    "signer": "0x187a96d4aeCA80d86902567ac0aC583Eb555E72C",
    "userId": "601253055"
  }
}