{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343301",
    "entityType": "User",
    "nonce": "0xcf0b5fd0375e0069e2dd8eef46830e3bc4371a13f6103bafb8e730007909fd49",
    "signature": "0x1bd32112f5f9f916a8028eb386bc9d2299200c768f769eeb1d0260039b2239db56cb8e2628cd4ed5dd7f70f54eabe78add19f911f482bf8580e52855321b53051b",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}