{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfcbe40edfcfa4c3f084565ad2914a889d99e2ea946653f01e70cd07090e75c94",
    "signature": "0x3d9c4e7944f0109c00238d8a73f5e50b3704b03d41c6e4992be5bb5d074323823d785fb59349ffa511869c87312ff6fc241e0907cce2e4274738b061efa5f4ad1c",
    "signer": "0xeBAd199ADd52C718Fdfe61bA3D46715564Acfd15",
    "userId": "977613650"
  }
}