{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30974",
    "entityType": "User",
    "nonce": "0x4974f0576b063323e59cce224af0662a4009e9d44c0ba8edf30d369d3ed48ee7",
    "signature": "0x4b017d285f6e4c5d71e8fb4ffd3cd0a1b3b26c4ca9f01434c51194ca3eb907946f653429ec4d465dd65369479c0d3c508572931e13fc90b049ce609c50ab1dd11b",
    "signer": "0x7b791A49D1D9A8914980649c5018fbeD13B80Ee4",
    "userId": "149429986"
  }
}