{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1440255",
    "entityType": "User",
    "nonce": "0xfdf4f91d66d1b5cf2e694fb86b1dba5f0495cae6f8a1a127eb6ef77589757a9e",
    "signature": "0xc46468be23cb58a1228844e58ae047cc4dad5853a4493b24786c0837a48d33ba27dd9e769095248b386f01572d57bd1074a2231afb837571f49f39b0d6648bc81c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}