{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0x907bf991f92c41829a7cce9d2bd5bae238312ddeefd5cec46a9fc604bd008ce3",
    "signature": "0x9d0132a1343973b2eaecf6b57d2565039f7770b84430929e0a3f61dd392cffd91c65bb20cfb3047439100aa64d0fc9b2df78569176b8a0764bb239381ce8fb3a1c",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}