{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "450943478",
    "entityType": "User",
    "nonce": "0xba09d9506dff59d953804d87f2e14bb747317b280ed88dbab6891f708fb9db40",
    "signature": "0x6bdd41af8caeb9297804120c5c81745251105ed1ac7f10b0d646893eb6ebe7166c9749f62de3c464a15f0d2201a7a1d51eb2c48607be3d20ca53af9622a734711b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}