{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81816",
    "entityType": "User",
    "nonce": "0x79e577842ea1aaf935782eed65109969a4e609557a8c36fd626a97738069c71b",
    "signature": "0x6af6edd79b7b7b768a4955e9d4e98dbe04b8874344d4a007657ee05b67109c7907ac4a8151e274186db234a933dc4eedee1b0766cd50da68a00aa79b2d53226b1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}