{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "501531",
    "entityType": "User",
    "nonce": "0xffb98c861e29de088c45ac90ae6379f16528b98d1949ab69be454f9c85fbb897",
    "signature": "0x12eddf5222cbcf2fda0c1e217fd02d17e684a490c8d2f017997909b7ca304c4b2a8759d3c4b78f14a4c694a54d6737c1aee0e01ad9823290adc142c205c17af11b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}