{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1321761",
    "entityType": "User",
    "nonce": "0x989c05e8a337b208ec7db75732e8a96efa669a06481a5232675df77e7b3bf305",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}