{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xce107e515ef2ad358eef6e63f0dbd43400b2c66fa671a2fb55c02e3aad0bb57e",
    "signature": "0xd754e5e58547a21d65b8b512073a6ee65453f5458c3b2157e48205b40d9f0d740351511c90c3c3a0bba12c3bfa1f464f018a39db5f417899ffec3d7ea927c5d71b",
    "signer": "0xCAB94B72D8A17f3Fb81B21c9997F8b79E5e7BA73",
    "userId": "357321533"
  }
}