{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0x08ca6840c36908779d724d3a3f6ca74197ee1f046de80104abb58f49af0d4904",
    "signature": "0x0848f2dc57ff22d7d031f7b3c6c11acd1ad008ef1872a8ddfdb3ddea50aa1e650b135f595023d5585e47172d801ad44ebbe2e96a5c2349d152cbc09de1fed7ff1c",
    "signer": "0x975699e892A0a2f2f16d2b8950Ac7C882B8EF555",
    "userId": "544952248"
  }
}