{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1890846",
    "entityType": "User",
    "nonce": "0x0a50db798dded212fc593716fbcce08f7519a4a540e340bbc32b6b071f65a421",
    "signature": "0x1f05ce608d13c144ca766a51c1aacdb3ab35f98c17b611e4d491de8ae11f1fbf296c803eeabb8943225a53975686944db710f140391d954f3425656147cfc3db1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}