{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370796980",
    "entityType": "User",
    "nonce": "0xe7ced065adaf89c29e4b9440334985bc967bbba88ec3f5f124052e3159c53de2",
    "signature": "0x03e35d617542bf6e3f2f6208ae5a0f87f837cf1f9d4f62cdc6ee3e2f29959dcf06052b7f8983d8dbb90975c1f1576b20a5f402dd1bfea3ff2c665f19230c83a01c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}