{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1667474",
    "entityType": "User",
    "nonce": "0x90255cdb06c8c41bc5db5d0fb68b7b80f71dc3b323db1ce9b86b7fad5579f25b",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}