{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x6e571aef5f1c09aa9792df020fd68074dc8056ecc2179fc993b6d71428d22b5e",
    "signature": "0x4ca1aaa244249ddcaa79d64f333a291d5b288ead74d901356b2ad9838dced32f3fc19629cb960c87ad89e8e8f40057aa97272a5647716d27a17acf07c497e9661b",
    "signer": "0x56046a31D7E65D9342F04D2FE7819A0388654272",
    "userId": "612767122"
  }
}