{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4f4dee2850b0d3249544e91eb92df90a13643a69ac3c4302a29773df9c20d590",
    "signature": "0x8d34c5df8e0891a3e1d14642e907e92b31334eba5ada7845206a63f26fa17e6f1eca1e67ac522aa2725def5d4b483a2064e220f1c55d6b5207cfacd6958d251f1c",
    "signer": "0x1A04334e2cEc7cD99a39f9f1a9CA3faa6e37ecd4",
    "userId": "740077098"
  }
}