{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154520",
    "entityType": "User",
    "nonce": "0x8828ed6bcb0e70a78e66146b3a7abfe9e9b42bca34b15f4f5b6a6033e1a0ccf9",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}