{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485987672",
    "entityType": "User",
    "nonce": "0x1bfa89ab7d7609c131379a276df30251176338cc9e64e4bd3ba40c2c1a7a80a6",
    "signature": "0xa8d815d860abdbc92bd9cdf89fb20fad74bdb159cb141d2b33999ad8a0ecb4c00cfba1124c64fe4218bb439fdea66904afce98f0ef8d0792093279db17a673421b",
    "signer": "0x5FB1dF0c125C1F3cdda251a598Cb878a0A390F18",
    "userId": "25189733"
  }
}