{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308666",
    "entityType": "User",
    "nonce": "0x01c0854370f45871905e3398cccc88b135890b6926fa068170d7d261aed262f3",
    "signature": "0xc1884126a108759b3dcd710bcbed18cc7fcd71f924bc07c09e40c5b55fe2aa6d0fb21c988b389695891d130d1f916c9d5e459d7c0d43c99d4b2ee5d9d00dba261b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}