{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615702798",
    "entityType": "User",
    "nonce": "0xe3ffcd70ab4b72284dc3c5f4b401d77c9012f8d55a9aead327f6eb4280a72f44",
    "signature": "0x3b5ce1676593da6d03faf6fc2fa4386ff140aef93571479f9256ae471faf06ff1b93cfecf0bf527fd23c0692c4e200f3dd3e78d0e227a1509036d50eca6e8d291b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}