{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18253",
    "entityType": "User",
    "nonce": "0x4251eb8e1fec814363a9e7292ff83c10f96e7fc9cef6497a000a7ec76deb4d3b",
    "signature": "0xe789f11d755b4be11f7dd41a072db96eaba6edcb365cea4e449ee650d1c4013e66ae6bac3d8e43b572d9b1b3adcf58d36e37a82b45c40196af4c4abaa992e8a91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}