{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512820",
    "entityType": "User",
    "nonce": "0xf4f42666b660b0869f242da2e62ae35cadb39169e882d3f94470e3acd9984eaf",
    "signature": "0xacb6fd2f13a626af6c525eee2850aee49ef1ae7f27efff8977dfdb77daecbb17006d4435ea815637159fb9e92a64f50ebb72fa51ffe690dafb6017a57b3850a31c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}