{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203159",
    "entityType": "User",
    "nonce": "0x904c600cc1ceed67cf860a62e90f0b5cb8e294b6f606540b26e29aa39dafc777",
    "signature": "0xd49b3fe9aab20bd57b27375dd78f0b7d18bf93de387293924d3c536342ed51984b5a69fc4e9f865801e245dcb6671c7330ab513dfc68f18732fa1ef4c3a0aaac1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}