{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8523",
    "entityType": "User",
    "nonce": "0x2d72e0b22a3acf667601ec99d9af1de66305fb99d8f87fc50259c66d630e86a0",
    "signature": "0x2000b74ee6a5d4d812ba6b79c7e6bbab1c45d0a008c6fb3fde4a7d3b10e099b4215865dce721c7e48ee0d0629bf6e3d89b550a87f05a5e927657799b6c300ec51b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}