{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "725262277",
    "entityType": "User",
    "nonce": "0x103f32e1086b4a948cb71eb48a6f9ebd1d368d7ee5f6c16b7db165d9f2f6b2e6",
    "signature": "0x7a9c88b97c5bc88cb1d792d3b09b34d431abc153e110feab7b714221235709ca758ddeccaf85ce0cfa46502b853dbaf319cde5715322d564f57d1f863cdb36e91b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}