{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306624",
    "entityType": "User",
    "nonce": "0x125286ebe0157d89035390153eee3be75df96a2a291f6135dd041af994130e8b",
    "signature": "0x04b7c6d0562c4b7aeed8df00037471a54b01d079ecee3433fb17f60862b6653242f040771bbe66164bf3f71f849360887862ed1183afdbd6ba702a554b3795eb1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}