{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaa1055e069eacfd77f6f3107c633d878e3474fcbf377adc47928312937bbb5e3",
    "signature": "0x19c2e4728b0598343295b238db0a9166dd74070fb45bc8cf1e980b88cb366f7f4b9d78e6a238eee6cd6732a81d3b56297d482074d463d5b8169badda13ee53461b",
    "signer": "0x0381847B40E1daaC8534B7EC6A19b6D8CA64A56B",
    "userId": "382049609"
  }
}