{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "677761206",
    "entityType": "User",
    "nonce": "0x90bc87e26810a70e83cd5540ed3a6949e513f4a35121e919ae56ac28fdaead99",
    "signature": "0x39838d200aa038cedb1ba155c4565da9f866eea810ec00fded2110f966660eb35f955a51b240958b3cbe053b6aefc1cf5f37645d7b88f9592407f9dfd49992ef1b",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}