{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb6491d057ddb038c61dd36114a4a7dc68cc30a7bbbc7195e15b7a8db8747a00a",
    "signature": "0x6c10da9aaac0c3677df54274d73369e6e9ad9a62520d4e539a5e71a3a98f19037a1d9b0194e972513c8318452cd06d8c051e04a518cbc2a0299af35c4dcaa24a1b",
    "signer": "0xbf95c624D4d8F1b87cF50ed2099946E11E158D6c",
    "userId": "764248678"
  }
}