{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0xbe81f641ec41377d7a37b3a77cdd39bfd358de464ab70037a02d5c468a970383",
    "signature": "0x5f60d2595a510e2189923270107efc434ebf85f2f243981a5dddf0bd17b3bab465a922c89d83aeb11422a5784ae2b33d5e3ba14989cb21461ea85c02bbc7e12a1c",
    "signer": "0xE68B644418C49102f3baFE7007482B0DB0df6F74",
    "userId": "749228874"
  }
}