{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x578b572cbb509ff3bf91b9efa1911a660b974359859059423a77a1ac3c342bee",
    "signature": "0x2d76108e751efd145d4b8d456327289515ccd6a7636e330f3adb65fdb3a4d0ef67217a78901d9a9761c237d2ff7b46b0ed93eaf919d0f3b908f6ff7a04205e6f1b",
    "signer": "0x91ce22675b3Ae41635012FEC52f51e795276251a",
    "userId": "908674709"
  }
}