{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143331",
    "entityType": "User",
    "nonce": "0xefab7f0b1e1ab84fc963afd28da047d51f836098bbfed4e6b310495637a48d90",
    "signature": "0x565b8858d9a9d2e4d64f2c3bd2deb8fd4c5861b6ebbfd24868735134b0caa1dd335e36cd8978fbba9b58793a2fd9025ac4bdd34d001a527eefaac92f47c3e1ba1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}