{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1687304",
    "entityType": "User",
    "nonce": "0xbb31eb7fef76c7fd99be65d5394972d100dc7acd51bc1008c1b3b8150619b1c5",
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    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
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}