{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881277",
    "entityType": "User",
    "nonce": "0xae9015fbbd1f0ac8efe14d6da0add4b1aff9310f17632e221cefd0376b04e608",
    "signature": "0x42ec75d58acdeef32fdd2c53157af3ecbaf1a5391e3fdfaf03222e601ab3d2ac2f2a980fa5ad6e8c06062aa19a4f5887d321f05ccfa1a03f934741ef749a50c41c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}