{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0xf77823ed4ab37d65704e48e653a27170d2758542565a483fcacc908fdb93fb4b",
    "signature": "0x7e6ac5a5512b000371a5521be76635c190d33f1d9618c58ec9be7a234ce5a6f92c8424ff3466d8377628671ec7c886597fb97c7020d8ae8887eb49aea0cb494c1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}