{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0x7ce3401d25b8c67b17ed054063e1caf7ceb81c627144291e989acd27ce26a375",
    "signature": "0x2956c082b4d1caff07cde5e005699b21188078077a1e6f217ca731db69c14c6d2c0eefe55b40549597454bc61d4517540484fb0870f726c0efcdb343d3df62591c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}