{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57021",
    "entityType": "User",
    "nonce": "0x0f1136f6ee36aabcfd092e73506451461bd4a27799b8821f210af5d73adc970e",
    "signature": "0x75eedaa4a0d95422a872f83c24b4368c8cad4c7843f82ef02d0ae19dd31c07c076f33984f0b03ba8b3f90b2f520ece538e81505dc085c8757325168f634887af1b",
    "signer": "0x983B834EEB2c355EaD77E7F76138adb8b56faF18",
    "userId": "442086440"
  }
}