{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42614",
    "entityType": "User",
    "nonce": "0xcd55370aaa92dff1671394460ac4b883253c1dc449f2382fd29d2c175de6fc89",
    "signature": "0xc76c01ba60fb1b3b552ceb50927f1af1c71fb1dbbf1f09e24b47fbabf55568d6349fad9be4cc2ff2be124755c4b5006ff65b3c870acca2952f20132d26f39cdb1b",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}