{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "668",
    "entityType": "User",
    "nonce": "0xa6c2ce431b13e7ae58e0a56fd5316cb0e1a06a6e7ec70e991711ce698aab2f5a",
    "signature": "0x97352ab2b0e6597bf4975bfdeb1359da3a38262ead47750c8c31d193a960b264065f5a957ffb624b6f30e9ae19cd9b7461f8cec0a0edc655a6d7e07ff81bf8d31c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}