{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc19365d1038aaec3c9f979ddd4176c03a675933c48c4a8da1ea1fd24b88ade42",
    "signature": "0x40a328c8e36362a584b5e25302dc8e6ddbf254d8635b5d1516254b90c8d204195623793acc007f94d35bbb0ede63ebc14cdcae12675285c3a1ae5e824a3ee1441c",
    "signer": "0x708A7061912051AB22f6d4ca04e297c4d0d29766",
    "userId": "561658710"
  }
}