{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x14a0e248fd7d1a07494a32a79ef05f39af7329785189bad6600d727dc7abbc08",
    "signature": "0x348cdfc1d11683de38bdb8a3ab4aa42af468094aed1783880b8edefd279452e162f54cc1ac292c7dc9b21336176fd6fa75a07a9cd567332fe4466225a8799e191b",
    "signer": "0xc7E3F976Cd464DD5ab7F6F621Bcb6CB940429D0e",
    "userId": "725367154"
  }
}