{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "975661020",
    "entityType": "User",
    "nonce": "0xf4301b4c38d1ae0c391b4c8a6c9801808ff800c4ed1cd15df8329f4c8a1bcf05",
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    "signer": "0x4F667530f7092Ee8C031321b8865575Df29b90AE",
    "userId": "88327896"
  }
}