{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xda3243dfb7d28bdddbc6c9d50426ea5b578e6d29e65aa7aab0eabe28221d2ab9",
    "signature": "0x1b1aad895376e095d0d7589d0719814c69dfa17980cc811fba0513fbfb55c1d16fac2c3d0653d9922b2425419049e4c645be63f29b1dda4d0906a97ef56ea26b1b",
    "signer": "0x6E3a2Eced379857dee1D751990a017493Bf4a316",
    "userId": "972403996"
  }
}