{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64670",
    "entityType": "User",
    "nonce": "0x13bfd61d9f8f03c353fa83e0ff5f5f4ad2e9a197dd9f45faf61851f0ab233cec",
    "signature": "0xde8ef6c69d6e8654dd244aaf9add0c971a374366c64fbbb9a1b27cf6a1ce83b22ded0f28334ed85d963e2e6ea4d58cff4a75364004499fb0be02931f4a31aa851b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}