{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "660253053",
    "entityType": "User",
    "nonce": "0x0e50c55f313c9e6fc4b34862b4fb42ab6e54b9a1bbe9c43a3145147820148b15",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}