{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273538",
    "entityType": "User",
    "nonce": "0xf888a0f9ea9410cf787c86d7f97f78b94a734d7a42a47b7209e0c37b63af635a",
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    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}