{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "376545",
    "entityType": "User",
    "nonce": "0x6565fd6c68fce7c69de3818dd6379d7624d729419117497aec7c5d220bbb3048",
    "signature": "0xf05c4d398a07bd0e40300e2b043ff2ff122507bd6e7010cf1dd87297d0b0cbda7097434998cdc28cb80ca893e7129e3c0359e5298855132a985f88cda8a5b7521c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}