{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12222",
    "entityType": "User",
    "nonce": "0x96838ca473eb5367da81b39d322133bd656697da79788fab9f3a0c1052727322",
    "signature": "0x7e583c751229962c8c65aed468f3b6c24bb1c6845a53a11fef3c050e432e452f0c7b28787243c0a4a1a66fc7ee5d2774d638bf10f603bf3242be5b6c23ec41a21b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}