{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152351",
    "entityType": "User",
    "nonce": "0x1bb5d54c74d485aeb10fcfc369d54aef5d09c2369af6ec6ef8fa3c3c58021340",
    "signature": "0x1670b37d2bc545958e4fd2e04fc5b56318c2cf90f65e1834432cb7baeace19e045098b14f3a4605af9adb70059eb6afb2df4e4a0bc2f2e59aba12631a99b94411b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}