{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "191315561",
    "entityType": "User",
    "nonce": "0xb987d92e2e0a977f6f99624fa60b13e9b87a515aef1bff687b73504371af5a87",
    "signature": "0xb5aee841c2c4838e01023709c725999ff35d9754ed6f41481845aa70a2050cd06f38d30d957592db4ad59b8e3dfec1f8a5f2bffdd0964477bab155d76a1fcd7f1c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}