{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "507122246",
    "entityType": "User",
    "nonce": "0xca4ca3ae304d49284a8ea3a1567eff703ca59846f2509e08990b44626462bd4a",
    "signature": "0x82d194a6ee786630ba7e81b269261fe9023b0c4ca471c578641136df478c3bb871693cf747912bbb5ab69a9971c1a845231d977de19c4ec78883ac9e39e7f9e91c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}