{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991960",
    "entityType": "User",
    "nonce": "0x1ca56d3972f00d0cd12ec36e57d993fbc0b0d1c318df9035e525d4f91e87ffae",
    "signature": "0xa1a0147492a1be3682df7bd50b5602f4c17f85c1b69099ae2325dd17a2bb5f31218a9bd098f4af9988e526ab5bd7afc1b0df48b235bc438163a35473441b7e4c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}