{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1684",
    "entityType": "User",
    "nonce": "0x782616467afb15cd18758f37f76a0e373917d16c2ec904dd33b6138f3d663231",
    "signature": "0x70800894d0f4ad25105726a2d1d2f185ef537ce04abeedd57484545e2ad51800695cc0ed20d8deed7fe90ac3ed377eb0fa2cbb9f7f22f4cf57b145927f3e097b1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}