{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512820",
    "entityType": "User",
    "nonce": "0xbc134f523d386fcf5ef5a4e0a016424476cd3cccea75d9e244158a9f02e204aa",
    "signature": "0xf610cf31b591ad340a3447b2014404848fc88617d45900e8b00539dc0934932120112e312ad3564e4fa7c5282767c3024e4b0f81899593e1c412c51804ca862a1b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}