{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "789767385",
    "entityType": "User",
    "nonce": "0x0c902408e9c6f6db586b484897ab0ef3e40379858f3b8f3b31dd70b3b2915f3a",
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    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}