{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "209446",
    "entityType": "User",
    "nonce": "0xdb756b7d3f63139043599971df6833de354d64f8e4518581b230532546096d3a",
    "signature": "0xf67336e5869cd5ad844be1f3d76aa6ac4152e071db273e073ddc47d487371fcf250dbd061b4e53f19c692ae99adcb57279363890ef8225533c811c2e2e963abf1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}