{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xca4a78a3c6bc90e6ae37d2f3571cc27e49e52cf5fdae09be0a0a0653bfbeb4d2",
    "signature": "0x54a1fed5ec8ca6f1aae00be8e7520ca09126874fa38ecf0f73647c8866f6f89d022316daae8373aa93120928992a5fddec6d43091d7db38d7f5622f7236010ae1c",
    "signer": "0xBBc166d6cBCCC912BaDBd8aAB592f6e9D3A90301",
    "userId": "189200545"
  }
}