{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa7b21a04767edfe6f06cc37733a0b92f636422d102f13f78a540b609ff40dea0",
    "signature": "0x14b5bf57dd8f77f03eb80fc413d06d0f3469dfcb193a67eac30d3e8879edfc397f3b2e29087bb7bf5629f19ffd079f4c000bbdcf59cd13e48be7de1d29239cc41c",
    "signer": "0xbDC018Ed0705D31c254d709B0d7e72E5b4B9BfE0",
    "userId": "215455657"
  }
}