{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x67a3606604d55efb91971a22c5afe2fef8450c3232a475362bb72514c8eb2e30",
    "signature": "0xdc5840c49d8763f21e6af0bb04398a91aca5095d4378f3f157141fc50e58b594238ae170c9e8dcc450b755c03393d2adacb7a8959a7687e8d99ee8648d93dafa1c",
    "signer": "0x8A6d37Be1a08F1aaFB0BCc6ef8bea16935e6B39F",
    "userId": "687066725"
  }
}