{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf064818942f6b4485b3cde8be87e2d9f6aaf8efc4255691b5342c1556218b1b9",
    "signature": "0x2b758901ccec526d6f22b566f1125d9e266ffc0cbce54527002530d54031b5fd17e48c1034f52f3518074d0f98a89ad407f04d973347f7467f26b491f2bb63f81c",
    "signer": "0x3C1F167C8C60734E1063EFc09A11A2CD0BaEF416",
    "userId": "789613939"
  }
}