{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x722df6d0e17b6fd15d0fd5bcfbc357f8401827963b56ea24b5b79e66d3d8642b",
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    "signer": "0xF57BBaC2209c8153a5361Aa065890B33D0a03ece",
    "userId": "422633263"
  }
}