{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe08d675a82a02301afb9355e33944e9ea86187b409bf516b9df507edac029caf",
    "signature": "0x283259aab38bb6fd57c3e386030ae6c0e3df6af3b83e4abd1efdbecd7282088f71caafeba852fe996391ee8e7ab85d20115ac328e71981450155d094c6af3c7a1b",
    "signer": "0x1C643dD4250d7eAEa215886aE4Fb16311EC3a8c9",
    "userId": "988118528"
  }
}