{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880939",
    "entityType": "User",
    "nonce": "0xbf8c2d042f4fb663e4f4010874398523809acec2e3bf24d345b2c4b987007f50",
    "signature": "0xc859d4e8271aa0403de2bf64be17e592b68e18308c0841ae01be6edfb5bbd107219262116538ecfe5e86647f543002366b2df9222cb69257aed3308fc7235d6e1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}