{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951644728",
    "entityType": "User",
    "nonce": "0x5bbd0543880f559eb108b8a5e57567dfebab01323b56caf3b5a309914d0b1fac",
    "signature": "0x920ac44c2d01fe3f089ff37153a137016a13ed7a058272cdecf949a1662d598d20e4e2bdbad312054aa9691e870b905e8572c6e1d42aaf5167d8591df6e4c45a1b",
    "signer": "0xd367754F1CE503c2D28B6793582BC23fD71eE997",
    "userId": "420647095"
  }
}