{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1521632",
    "entityType": "User",
    "nonce": "0x87cc2fcdb9cdeb3c4ef839db725646e0966e8387b6c240a60c2b4f6fa4d4cfab",
    "signature": "0xee28f162e00d0ae77203950f9e5d508f770f5b3447a5f5bf3289dcaab72e1a7f36e93dce59c090c7d458b0c7059ea4e1c3c4465473a3d5a1fa05271ab27f7c771b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}