{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "595543989",
    "entityType": "User",
    "nonce": "0x9d0593b866a8aefd115639f0c16affffdd7af57c8204bf2b52e5d86bb86abfed",
    "signature": "0x07e5da445c0937d0a53b27847e22278ca6d896e4b97fba3a3e22a3833bf5ac3d0b13c55fcf23744cd2b58a1f4b2e0af78ffecb3638076c887e515b2b0fe9c24d1c",
    "signer": "0x1FAF3C6ab652411A004DdcF812Aee9dEB0d7Cc74",
    "userId": "395353709"
  }
}