{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1693b5fe86dead80a131cc32f0f2d11dc53e4f48087e1f1282c3d3a058b36b64",
    "signature": "0x19137773caeb96671c4a39ca01dbeea468fcd8ccbd87ff9ba39e66d2778eae553afa4da9e3af82b6a7fe001315c52b4afec47f1917231b384cd4d7f9a634974a1b",
    "signer": "0xEAb9Fff0c9a60c9Cf2aF56385027ca8B72877200",
    "userId": "429825729"
  }
}