{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537944538",
    "entityType": "User",
    "nonce": "0x4cb3801fe5211b4e7844065f7cb5739718d3b7378599b6d4dbe8eb51109d3bc7",
    "signature": "0x5509e2c3e2ba587b9438e1187a40fe0df62f5c0b87994e343a439556ac9fa30873d739efec941ada06a4a4fa6f5056ffdcec36afad49a3e705ed06b6e55b57441b",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}