{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355647",
    "entityType": "User",
    "nonce": "0x4210d4217e3630ff9a2965ae678d0a233b2dd3ff70cc3f000e224d5b09158d75",
    "signature": "0x2936a3d693d4c137fd61edb9ddc69b78aa96bebbebd3a6fa1b30f948ff1b88e46229a91d3298be7bb3c582a5daaabd88de79536ef99fa6594f7cd5cc3855783a1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}