{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3401",
    "entityType": "User",
    "nonce": "0x9c12a31575580008170c3a90b534da695f4593d944c8bef4a1025a0252622993",
    "signature": "0x1dbb42e0400ca0939d2d4931cb7f1eca5e4097202d1270600611768dc9f6c97b7546bb5b5264e6b195e23924818958ee48f9a498e9396fc2fdeb9005eed0643a1c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}