{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53199",
    "entityType": "User",
    "nonce": "0x72302423def69dc0d37e5a77b24624372686640510b3f836ce7ab35b62c5de3b",
    "signature": "0xb618724c40c174b1a64d06396e185007c4e7581a7db0afbeec551835a0822f7941b215e487121cc2f2be996ef1c2ca79699865a7ef64ad0f26dfa97f1029699d1c",
    "signer": "0x45C682dAb9Cd8ED5e055aC2F6a860Db5F14c27C9",
    "userId": "611525840"
  }
}