{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x66a79d1a13d994f24b36617fa191086fa244048b894c711aa6d29aee0197f3b5",
    "signature": "0x34b43243f8f0f32970cef75f258e385f56a27983a858eb7e6493ba1749b1342e56789cc0552b636deba450ec6f035e07d5262933578039dbe7b625bfccceea171c",
    "signer": "0xC59f7055B078B1Ee57c271E19BE5Dd7033FD64f5",
    "userId": "950751701"
  }
}