{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x13aeeb9cc13f765f26e2149019da072a14328fce0ecc2ce81f95f43c423ac928",
    "signature": "0x5d5ea0ca49d702256005d51d2a0f0369b6fb0da330728b27dbd52eceada04d0e4b18708c6bf10e486d2dfcc5b22fa904c7cf7ae4387dd73623fa236ab4cc6ee21c",
    "signer": "0xDb76663ADEf809efE2D6914c99E1bf0B5e252F7a",
    "userId": "169901003"
  }
}