{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74c09dcc7bff30fff2eca888048de382756007018466b71c4af6762696889429",
    "signature": "0x0894a48be6793b953514c5046f5eb0f80bfda99a33d4a65db12eefb2e45e7e2f5dec5ef87c04bb052dbed0b55aca0ab452a734582eecfd5bb4b7c4a3503186931b",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}