{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "188933",
    "entityType": "User",
    "nonce": "0xe4b28a376c4b7916c96b43aa990ab4a8f01b8a6d9935b611b3f6dbf08c62677a",
    "signature": "0xdd838c6bcb7606b967c25113e114c9704f6245d490c555231f019667661b21d8518b0a2765cbc1e36f0b4c52ee93f09c77a936ab2458ba57f8a90cb965436fa61c",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}