{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1884618",
    "entityType": "User",
    "nonce": "0x38f917cdf2376f17e3385a9c9671aef00077299c7c3cb29137c8b3e659d57dd9",
    "signature": "0xad5f505e00004be2b0aa8d1c742038aaad3e492428a01ece836a56b8d8613dc50241521870682aef877893e113e1d1e82ac70a85171fc1a99c943e718b3ec7ac1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}